An anti-disturbance control problem is investigated in this paper. The disturbance observer plus back-stepping (DOPBS) control scheme is proposed for a class of strict-feedback nonlinear systems with derivative-bounded disturbances. A nonlinear disturbance observer is designed to estimate the derivative-bounded disturbances. By combining the disturbance observer with back-stepping method, the DOPBS controller is designed to reject and attenuate the disturbances. Stability analysis proves that all the signals in the the closed-loop system are uniformly ultimately bounded (UUB). Finally, simulation examples demonstrate the feasibility and effectiveness of the proposed approach compared with existing methods.

中文翻译：

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一类具有导数有界扰动的严格反馈非线性系统的基于扰动观测器的控制

本文研究了一个抗干扰控制问题。针对一类具有导数有界扰动的严格反馈非线性系统，提出了扰动观测器加反步（DOPBS）控制方案。非线性扰动观测器旨在估计导数有界扰动。通过将干扰观测器与反步法相结合，DOPBS 控制器旨在抑制和衰减干扰。稳定性分析证明闭环系统中的所有信号都是一致最终有界（UUB）。最后，仿真实例证明了该方法与现有方法相比的可行性和有效性。